With this win, Deepak became second Indian after Naveen Boora (69kg) to seal a spot in the semi-finals in the on-going tournament and also assured second medal for country.
Both, Indians will now face Uzbekistan boxers in their respective last-4 clash on Friday night.
Deepak will face a strong challenge from Rio Olympic champion Shakhobidin Zoirov while Boora will be up against Asian Games gold medallist Bobo-Usmon Baturov.
Meanwhile, Indian women boxers Jyoti Gulia (51kg) and Bhagyabati Kachari (75kg) suffered 5-0 defeats in their quarter- final bouts.
Gulia lost to Romanian boxer Lacramioara Perijoc while Kachari went down against the world championship bronze medallist Naomi Graham of USA.
Manjeet Singh also lost his 91+kg quarter-final bout against Armenia’s Gurgen Hovhannisyan. (UNI)